Ghost Adventures Star -- Demons Be Gone! Finally Dumps Haunted Pad

"Ghost Adventures" star Zak Bagans is through dealing with Satan and his minions ... now they're someone else's problem.

Bagans survived 20 months of a dead housing market, and finally unloaded the house he claims has been possessed ever since he brought home a human skull (for research, of course).

Not shockingly ... that claim didn't really help move the house any faster.

Waiting out the demon paid off -- we're told Bagans got $445,000 for the house ... an $85K profit.

As for the new owner, we have a recommendation for a cleaning lady ...